Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0f2bbcde3b8724…

MALICIOUS

PDF

43.4 KB Created: 2021-05-17 02:11:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4d1c5559bb88880eb8a04af855422129 SHA-1: 99f228784bdd236ad6cdca370070c4ee2ab671e3 SHA-256: 0d0f2bbcde3b87249fe524fa9f879e56e5d54a0a52e6ba7f393fe2f04707478e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, forming a link farm, which is a common tactic for SEO manipulation and potentially distributing malicious content. The document body and extracted URLs suggest a lure related to game cheats and free items, aiming to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and extensive link farm indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/blogspot-free-spins-coin-master-game-hack
    • http://stroygrad-spb.com/images/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://stroygrad-spb.com/images/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdf
    • http://stroygrad-spb.com/images/free-robux-wheel_GM431946152.pdf
    • http://stroygrad-spb.com/images/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • http://stroygrad-spb.com/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdf
    • http://stroygrad-spb.com/images/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://stroygrad-spb.com/images/master-free-spin-and-coin-links-html-m-1_GM406889139.pdf
    • http://stroygrad-spb.com/images/free-minecraft-gift-card_GM479516143.pdf
    • http://stroygrad-spb.com/images/free-robux-hack-generator_GM431946152.pdf
    • http://stroygrad-spb.com/images/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://stroygrad-spb.com/images/free-robux-no-password_GM431946152.pdf
    • http://stroygrad-spb.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://stroygrad-spb.com/images/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdf
    • http://stroygrad-spb.com/images/roblox-piano-hack_GM431946152.pdf
    • http://stroygrad-spb.com/images/is-minecraft-bedrock-edition-free_GM479516143.pdf
    • http://stroygrad-spb.com/images/minecraft-for-ipad-free_GM479516143.pdf
    • http://stroygrad-spb.com/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdf
    • http://stroygrad-spb.com/images/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://stroygrad-spb.com/images/free-spins-coin-master-no-survey_GM406889139.pdf
    • http://stroygrad-spb.com/images/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049bd.bin
a2e112b434b2be44730f5e331d2208e3652081b5ba07d4c44c84c5e40ddb3410
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49BD 27200 bytes
font_01_sfnt_off000086ff.bin
13f550290c9517edfa079139010aad5547f5fad726399bfec3a78be220de1a28
pdf-font-stream PDF embedded font (sfnt) at offset 0x86FF 18464 bytes